Once a year, Magnum photographers from all over the globe gather in either New York, London or Paris for the agency's Annual General Meeting. The AGM, held over three days toward the end of June, is a bit hard to explain -- something like a cross between a board meeting, a papal conclave, and a family reunion -- but it lies at the heart of the cooperative structure that Magnum has employed since its inception. In a series of meetings and discussions, important business decisions are voted on, nominees and associates are promoted and new talents of the photo world are invited to be nominees.

This year, the AGM is being held from June 27-30 in London, and today we take a look back at some AGMs of the past, captured in behind-the-scenes images by Magnum photographers.

Magnum Photos is a photographic cooperative of great diversity and distinction owned by its photographer members. With powerful individual vision, Magnum photographers chronicle the world and interpret its peoples, events, issues and personalities.